Emergent nonlinear phenomena in a driven dissipative photonic dimer
Emergent nonlinear phenomena in a driven dissipative photonic dimer
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DOI：
10.1038/s41567-020-01159-y
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发表时间：
2020-05
期刊：
影响因子：
19.6
通讯作者：
A. Tikan;J. Riemensberger;K. Komagata;Simon Honl;M. Churaev;C. Skehan;Hairun Guo;R. N. Wang;Junqiu Liu;P. Seidler;T. Kippenberg
中科院分区：
文献类型：
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作者：
A. Tikan;J. Riemensberger;K. Komagata;Simon Honl;M. Churaev;C. Skehan;Hairun Guo;R. N. Wang;Junqiu Liu;P. Seidler;T. Kippenberg
在脱离平衡的复杂非线性系统中，导致空间、时间或时空模式形成的集体效应无法在单粒子水平上描述，因此通常被称为涌现现象。它们的特征是长度尺度超过特征相互作用长度和自发对称性破缺。集成光子学的最新进展表明，在复杂耦合非线性光学系统中研究涌现现象是可能的。在这里，我们证明了光子集成克尔微谐振器（“二聚体”）的强耦合对的非平衡驱动-在“单粒子”（即单个谐振器）水平上产生众所周知的耗散克尔孤子-表现出出现的非线性现象。通过探索二聚体相图，我们发现了孤子跳变、自发对称破缺和周期性出现相称色散波的机制。这些现象不包括在单粒子描述中，它们与杂化超模之间的参数频率转换有关。此外，通过电控超模杂化，我们实现了二聚体孤子与色散波之间的光谱干涉模式的宽可调性。我们的发现代表了研究孤子网络和多模态晶格中出现的非线性现象的一步。
Collective effects leading to spatial, temporal or spatiotemporal pattern formation in complex nonlinear systems driven out of equilibrium cannot be described at the single-particle level and are therefore often called emergent phenomena. They are characterized by length scales exceeding the characteristic interaction length and by spontaneous symmetry breaking. Recent advances in integrated photonics have indicated that the study of emergent phenomena is possible in complex coupled nonlinear optical systems. Here we demonstrate that the out-of-equilibrium driving of a strongly coupled pair of photonic integrated Kerr microresonators (‘dimer’)—which, at the ‘single particle’ (that is, individual resonator) level, generate well-understood dissipative Kerr solitons—exhibits emergent nonlinear phenomena. By exploring the dimer phase diagram, we find regimes of soliton hopping, spontaneous symmetry breaking and periodically emerging (in)commensurate dispersive waves. These phenomena are not included in the single-particle description and are related to the parametric frequency conversion between the hybridized supermodes. Moreover, by electrically controlling the supermode hybridization, we achieve wide tunability of spectral interference patterns between the dimer solitons and dispersive waves. Our findings represent a step towards the study of emergent nonlinear phenomena in soliton networks and multimodal lattices.